在他致闭幕词前，近半数听众已离开了会场。
Nearly half of the audience have left the meeting before he delivered the closing speech.
在出差前做一些调查，这样才能根据你的行程，订到离会场或飞机场最近的酒店。
Do some research before you travel, so you can find a hotel in the best location relative to your meetings or the airport, depending on your schedule.
演出前，我们曾在会场进行彩排，让7年班同学更清楚当日演出的程序。
There was a rehearsal before the concert, which was a run through of all performances allowing all Year 7 students to know better the procedures.
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